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J.P. Morgan's Game of Thrones

By

John Carney

March 25, 2014 4:12 p.m. ET

The game of musical chairs atop J.P. Morgan Chase continues.

The surprise exit of Michael Cavanagh from the bank Tuesday represents yet another instance of a top executive tagged as a possible successor to Chief Executive James Dimon heading for the door. While the outflow has slowed since departures following the bank's "London whale" trading debacle, the latest move underscores for investors the continued lack of clarity...